The best answer I can give is, "It really depends on your mouth chemistry and experience level." For some people bright Virginias tend to bite them, for others it's Red Virginias, Burleys, or wet aromatics. It really depends on your own individual mouth chemistry what may bother you or may not.
Personally, when I first started smoking a pipe, EVERYTHING bit me. Bright Virginias were the worst, but I'd get bite from just about anything. However, after a couple years of practice learning to smoke slowly and sip the pipe instead of puffing on it, almost nothing bites me anymore and I smoke about 2 or 3 pipes a day every day and all sorts of styles of blends. The only surefire way to get rid of tongue bite is really just time and experience, and learning to smoke slow enough that nothing bites you.
As far as the excessive saliva thing goes, that's an experience level based problem as well. For many people when you first start smoking, or if you haven't smoked in awhile, it's normal for your mouth to just gush saliva. As your mouth becomes accustomed to smoking a pipe regularly though it goes away on it's own and you'll stop salivating when you smoke. It just takes awhile. Again, the solution for almost every problem in the pipe smoking hobby is just, "Time and experience".